362 SHORT NOTES, 



mportant bearing on the position of these plants among the Plmo- 

 jjhycea. — J. Lloyd Williams. 



Salix cernua Linton. — In my paper on the " Salix Lists in the 

 London Catalogue " [Jouni. Bot. 1896, 461), I omitted any reference 

 to 8. cernua, no fresh light having been shed on its origin since the 

 description was written [Jouni. Bot. 1894, 202). This year the 

 Kev. W. R. Linton and myself were at Braemar in July, and 

 happily re-discovered the original plant on a rocky slope of the 

 Little Craigindal, and a fair amount of specimens were procurable 

 for our Set of British Willows. A doubt had been raised by the 

 late Dr. F. B. White whether S. lepens L. ascended to the altitude, 

 about 2100-2200 ft., at which the hybrid occurred ; and, though 

 I felt little doubt that I had *S'. repens from such an elevation, and 

 the Student's Flora says it "ascends to 2500 ft. in the Highlands," 

 there was no evidence to show its presence in the neighbourhood 

 of the Little Craigindal rocks. It was therefore a great satisfaction 

 to me to find -S. repens growing close by the plant of S. cernua, and 

 interesting to see plants of it flourishing on rocky ledges, a situation 

 in which I do not remember to have noticed it before. We kept a 

 sharp look-out for S. Lapponum L., as that had formerly been sug- 

 gested to me as the probable co-factor with S. herbacea in making 

 the hybrid ; but it was nowhere seen along the whole length of the 

 rocks. The prevailing willow was S. Myrsinites L., which was 

 fi-equeut, and presented some variation of leaf. A hybrid should 

 occur here between S. Myrsinites and S. repens, in one spot growing 

 in close proximity ; and this should be looked for in future years, 

 though it does not seem to have been developed as yet. I gave my 

 reasons when describing S. cernua for distinguishing between it and 

 6'. herbacea x Myrsinites; a plant of the latter, unmistakable, though 

 male, was detected by the Rev. W. R. Linton on the same rocks 

 during our visit in 1889, and cultivated specimens of this will go 

 out in the same fascicle with S. cernua, for the sake of comparison 

 and contrast. — E. F. Linton. 



PoTENTiLLA NORVEGicA L. IN SuRREY. — I iioticed somo plants of 

 this species by a pond near Box Hill in June. Camelina sativa 

 occurred on gravel near Dorking. — G. C. Druce. 



Caucalis nodosa Scop. — This plant, which usually occurs on 

 sunny banks, I noticed recently in great plenty in a clover-field 

 between Little Brickhill and Water Eaton, in Buckinghamshire. 

 Here it had much of the habit of C. arvensis. The umbels, especially 

 the lower ones, were shortly stalked. — G. C. Druce. 



ViciA viLLOSA Roth, var. glabrescens Koch. — My friend the 

 Rev. H. J. Riddelsdell has sent me a vetch which he tells me is 

 found in some quantity on heaps of rubble near Aberdare. This 

 1 find to be the plant above named ; it has much resemblance to 

 V. Cracca, but the prolonged and almost gibbous base to the petals 

 at once distinguishes it from that species. Asperula arvensis occurs 

 in the vicinity. — G. C. Druce. 



